from django.shortcuts import render
from django.views import View
from verifications.libs.captcha.captcha import captcha
from django_redis import get_redis_connection
from django import http
from . import constants
from meiduo_mall.utils.response_code import RETCODE
import random
import logging
from verifications.libs.yuntongxun.ccp_sms import CCP
from celery_tasks.sms.tasks import ccp_send_sms_code

# Create your views here.


logger = logging.getLogger('django')
class ImageCodeView(View):
    '''图形验证码'''

    def get(self, request, uuid):

        #  生成图像验证码
        text, image = captcha.generate_captcha()
        #  保存图像验证码
        redis_conn = get_redis_connection('verify_code')
        redis_conn.setex('img_%s'% uuid, constants.IMAGE_CODE_REDIS_EXPIRES, text)
        #  响应图片验证码
        return http.HttpResponse(image, content_type='image/jpg')


class SMSCodeView(View):
    '''短信验证码'''

    def get(self, request, mobile):
        '''

        :param request: 请求对象
        :param mobile: 手机号
        :return: JSon
        '''
        #  接收参数
        image_code_client = request.GET.get('image_code')
        uuid = request.GET.get('uuid')

        #  校验参数
        if not all([image_code_client, uuid]):
            return http.JsonResponse({'code':RETCODE.NECESSARYPARAMERR, 'errmsg':'缺少必传参数'})

        #  创建连接到redis的对象
        redis_conn = get_redis_connection('verify_code')

        #  提取校验send_flag
        send_flag = redis_conn.get('send_flag_%s'% mobile)
        if send_flag:
            return http.JsonResponse({'code': RETCODE.THROTTLINGERR, 'errmsg': '发送短信过于频繁'})

        #  提取图形验证码
        image_code_server = redis_conn.get('img_%s' % uuid)
        if image_code_server is None:
            #  图形验证码过期或者不存在
            return http.JsonResponse({'code':RETCODE.IMAGECODEERR, 'errmsg':'图形验证码失效'})

        #  删除图形验证码
        # redis_conn.delete('img_%s' % uuid)
        try:
            redis_conn.delete('img_%s'%uuid)
        except Exception as e:
            logger.error(e)
        #  对比图形验证码
        image_code_server = image_code_server.decode()
        if image_code_server.lower() != image_code_client.lower():
            return http.JsonResponse({'code':RETCODE.IMAGECODEERR, 'errmsg':'输入图形验证码有误'})

        #  生成6位短信验证码
        sms_code = '%06d'%random.randint(0, 999999)
        # print("短信验证码是{}".format(sms_code))
        logger.info(sms_code)

        #  重新写入send_flag
        #  保存短信验证码
        #redis_conn.setex('sms_%s'% mobile,constants.SMS_CODE_REDIS_EXPIRES, sms_code)
        # #  重新写入send_flag
        # redis_conn.setex('send_flag_%s'% mobile, constants.SEND_SMS_CODE_INTERVAL, 1)
        #
        # #  保存短信验证码
        # redis_conn.setex('sms_%s'%mobile, constants.SMS_CODE_REDIS_EXPIRES, sms_code)

        #  创建redis管道
        p1 = redis_conn.pipeline()
        #  将redis请求添加到队列
        #  重新写入send_flag
        p1.setex('send_flag_%s'% mobile, constants.SEND_SMS_CODE_INTERVAL, 1)

        #  保存短信验证码
        p1.setex('sms_%s'%mobile, constants.SMS_CODE_REDIS_EXPIRES, sms_code)
        #  执行请求
        p1.execute()

        #  发送短信验证码
        # CCP().send_template_sms(mobile,[sms_code, constants.SMS_CODE_REDIS_EXPIRES // 60], constants.SEND_SMS_TEMPLATE_ID)

        #  celery异步发送短信验证码
        ccp_send_sms_code.delay(mobile, sms_code)

        #  相应结果
        return http.JsonResponse({'code':RETCODE.OK, 'errmsg':'发送短信成功'})